Download MAX3803 Evaluation Kit ________________ General Description Features _________________________

19-2789; Rev 1; 6/03
MAX3803 Evaluation Kit
_________________________ Features
The MAX3803 dc-coupled evaluation kit (EV kit)
simplifies evaluation of the MAX3803 2.488Gbps to
3.125Gbps equalizer. The EV kit enables full testing of
all the device’s functions. SMA connectors with 50Ω
controlled-impedance transmission lines to the MAX3803
are provided for all CML input and output ports.
♦
Independent Input and Output Voltage
Terminations
♦
SMA Connectors for All High-Speed Inputs and
Outputs
♦
Fully Assembled and Tested
_______________ Ordering Information
PART
MAX3803EVKIT
TEMP. RANGE
0°C to +85°C
IC PACKAGE
5X4 UCSP
________________________ Quick Start
Note:
____________________ Component List
DESIGNATION
QTY
DESCRIPTION
C2-C7, C9, C12C14
10
0.1µF 10% Ceramic Capacitor
(0402)
C1, C8, C10,
C11
4
33µF 10% Electrolytic
Capacitor (B CASE)
J1, J2, J9-J11,
TP1, TP4-TP6
9
Test Point
TP2, TP3
2
Not Installed
J3-J8
6
SMA Connector EDGE
MOUNT (TAB CONTACT)
J15-J17
3
1X2 Pin Header (0.1” centers)
J18, J19
2
1X3 Pin Header (0.1” centers)
L1-L4
4
1µH Chip Inductor (0805)
U1
1
MAX3803 5X4UCSP
______________ Component Suppliers
SUPPLIER
PHONE
1)
Do not turn on the power supply until step 6.
2)
Connect a –3.3V power supply to J11 (VEE).
Connect the power supply ground to J2 (GND) and
J1 (VCC). Remove shunt on J15; install shunts on
J16, 17, and center pin to VCC on J18.
3)
Apply a differential 1Gbps to 3.2Gbps input signal
(400mVP-P to 1000mVP-P) between SMA connectors
to FR4 board with length between 10in and 40in.
4)
Connect the output of the FR4 board to the J3 and
J4 (IN+) inputs.
5)
Attach a differential high-speed oscilloscope with a
50Ω input to SMA connectors J5 and J6 (OUT+) to
observe the output of the equalizer.
6)
Turn on power supply.
FAX
Digi-Key
218-681-6674
218-681-3380
Murata
814-237-1431
814-238-0490
Coilcraft
847-639-6400
847-639-1469
AVX
803-946-0690
803-626-3123
Note: Please indicate that you are using the MAX3803
when ordering from these suppliers.
The MAX3803 EV kit is a dc-coupled evaluation
board with 50Ω input and output terminations to
VTI and VTO, respectively. Care must be taken
to ensure that no direct short exists between the
supply voltage and supply ground. Normal dccoupled operation with all positive supplies
causes permanent damage to laboratory test
equipment because a dc path exists from the
power supply to the ports of the oscilloscope or
BERT. The MAX3803 EV kit must be operated
from a negative VEE supply when DC-coupled
to standard lab equipment. External ac-coupling
capacitors should be used when connecting to
standard lab equipment and when VEE (J11)
and the EV kit’s GND (J2) are at the same
potential.
_________________________________________________________________Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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1
Evaluates: MAX3803
________________ General Description
Evaluates: MAX3803
MAX3803 Evaluation Kit
__________________________Alternative
Supply Configurations
DC-Coupled Chip-to-Chip Operation
This setup allows testing of the MAX3803 in the final
system. Remove shunts on J16 and J17; install a shunt
on J15 and center pin to VCC on J18. Connect the VTI
(J10) pin to the CML supply voltage output termination of
the previous chip (transmitter). Connect the VTO (J9) pin
to the CML supply voltage input termination of the
following chip (receiver). Connect a 3.3V power supply
on the VCC (J1) pin. Connect the supply ground to GND
(J2). Insure that VCC, VTI, and VTO share a common
ground. VTI and VTO can be at different voltages.
DC-Coupled Operation with Laboratory
Equipment
This setup allows testing of the MAX3803 with standard
lab equipment (BERT, oscilloscope, etc.). Remove shunt
on J15; install shunts on J16, J17, and center pin to VCC
on J18. Connect VCC (J1) pin to +2.2V power supply.
Connect a –1.1V supply to VEE (J11). This setup forces
the VTI and VTO voltages to be the same at 1.1V with
respect to VEE. The VTI and VTO voltages must remain
the same in this configuration, but the level can change
by varying VCC and VEE. Insure that the difference
between VCC and VEE is between 3.0V and 3.6V.
AC-Coupled Operation
This setup allows testing of the MAX3803 in ac–coupled
operation. Remove shunts on J16 and J17; install shunts
on J15 and center pin to VCC on J18. Install external
AC-coupling capacitors to IN+ (J3, J4) and OUT+ (J5,
J6). Connect VCC (J1), VTI (J10), and VTO (J9) to the
same power supply between 3.0V and 3.6V. Connect the
ground to GND (J2).
Figure 1. MAX3803 EV Kit Schematic
Jumper J18
When the inputs to the MAX3803 are AC-coupled, or
when VEE is connected to GND connect the center pin to
VCC to enable the output stage. Connect the center pin to
GND to disable the output stage.
For all other cases, connect the center pin to VCC to
enable the output stage. Connect the center pin to VEE
using a wire to disable the output stage.
2 ________________________________________________________________________________
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MAX3803 Evaluation Kit
Evaluates: MAX3803
Figure 2. MAX3803 Component Placement Guide
Figure 3. MAX3803 PC Board Layout –
Component Side
_________________________________________________________________________________________
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3
Evaluates: MAX3803
MAX3803 Evaluation Kit
Figure 4. MAX3803 PC Board Layout – Ground
Plane
Figure 5. MAX3803 PC Board Layout – Power
Plane
4 ________________________________________________________________________________
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www.BDTIC.com/maxim
MAX3803 Evaluation Kit
Evaluates: MAX3803
Figure 6. MAX3803 PC Board Layout – Solder
Side
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ________________ 5
 2003 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
www.BDTIC.com/maxim